static JComponent jMaxSpeedAnimationWithText(IF0_Pair<BufferedImage, O> renderFrameWithText) {
  new ImageSurface is;
  is.pixelate(true);
  is.autoZoomToDisplay(true);
  new DoubleFPSCounter fps;
  var textArea = typeWriterFont(uneditableTextArea());
  awtCalcContinuously(is, -> {
    try {
      var imageAndText = renderFrameWithText!;
      fps.inc();
      is.setImage(pairA(imageAndText));
      setText(textArea, nlCombine_rtrim(fps, pairB(imageAndText)));
    } catch print e {
      setText(textArea, exceptionToStringShort(e));
      sleepSeconds(1); // error penalty
    }
  });
  
  ret jvsplit(jscroll_center_borderless(is), textArea);
}

Began life as a copy of #1035612